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  • Lisa Julia Nebel's avatar
    ab09c587
    Add LocalIntegralStiffness class with a test · ab09c587
    Lisa Julia Nebel authored and Sander, Oliver's avatar Sander, Oliver committed 
    The LocalIntegralStiffness assembles a tangent matrix by
suitably combining derivatives of the energy density with
derivatives of the geometric FE interpolation.  See the
detailed description in dune-gfe-manual.pdf.

This patch also includes a new test in localintegralstiffnesstest.cc.
It checks if the assembled matrix is the same as the one computed
by LocalGeodesicFEADOLCStiffness.

For a 3d Cosserat material I get a speedup of about 3x.
    ab09c587
    History
    Add LocalIntegralStiffness class with a test
    Lisa Julia Nebel authored and Sander, Oliver's avatar Sander, Oliver committed 
    The LocalIntegralStiffness assembles a tangent matrix by
suitably combining derivatives of the energy density with
derivatives of the geometric FE interpolation.  See the
detailed description in dune-gfe-manual.pdf.

This patch also includes a new test in localintegralstiffnesstest.cc.
It checks if the assembled matrix is the same as the one computed
by LocalGeodesicFEADOLCStiffness.

For a 3d Cosserat material I get a speedup of about 3x.